20121221010022 has 8 divisors (see below), whose sum is σ = 32925634380072. Its totient is φ = 9146009550000.

The previous prime is 20121221010017. The next prime is 20121221010049. The reversal of 20121221010022 is 22001012212102.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 20121221009978 and 20121221010005.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 457300477479 + ... + 457300477522.

It is an arithmetic number, because the mean of its divisors is an integer number (4115704297509).

Almost surely, 2^{20121221010022} is an apocalyptic number.

20121221010022 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

20121221010022 is a deficient number, since it is larger than the sum of its proper divisors (12804413370050).

20121221010022 is a wasteful number, since it uses less digits than its factorization.

20121221010022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 914600955014.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 20121221010022 its reverse (22001012212102), we get a palindrome (42122233222124).

The spelling of 20121221010022 in words is "twenty trillion, one hundred twenty-one billion, two hundred twenty-one million, ten thousand, twenty-two".